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Table 3 Need for ethics guidelines for cluster randomized trials (CRTs): number (%) agreeing or strongly agreeing with each statement

From: Variability in research ethics review of cluster randomized trials: a scenario-based survey in three countries

  Canada United States United Kingdom Total
  (N = 55) (N = 79) (N = 37) (N = 175)
There is a need to develop ethics guidelines for CRTs 45 (81.8) 67 (84.8) 32 (86.5) 144 (84.2)
Ethics committees need more information about ethical issues in CRTs 52 (94.6) 73 (92.4) 33 (89.2) 158 (92.4)
Application forms ought to be designed separately for CRTs 19 (35.2) 24 (30.8) 9 (24.3) 52 (30.8)